Creates new tab names correctly on non-GNOME enrionvments for Ubuntu.
KDE automatically binds keyboard shortcuts, which Qt represents with &x
(where x is the shortcut). This breaks the name lookup as &New != New in
"New Tab".

We now strip out these characters when looking up the names fixing the
names not incrementing correctly.

Also updated class_maker.py

When saving a script with a new name, emit the sig_file_name_changed
signal, as saving as is essentially a renaming.

Instead of having the option to filter in and out individual scripts -
with each script having a checkable menu entry - users will have 3
options: Hide all script output, show all script output or show the
output from the current tab's script.

If a script is renamed this will be mimicked in the "Filter by" context
menu. All the messages in the message history associated with that
script, will have their "scriptName" attribute updated to reflect the
change.

Remove '*' from script names when reading the names from the tab titles.

For example if creating two new tabs, the first would have title "New"
and the second would have title "New (1)" and so on. This will
distinguish the scripts in the message window "Filter by" context menu.

Unsaved scripts were emitting an emtpy file name when executed, this
created an entry in the message window's "Filter by" context menu with
no text.

The signal carries the path of the script that is being executed.
Hooking this signal up to the MessageDisplay will allow us to associate
stdout and stderr messages with a Python script.

Plotting from script and changing the code editor tabs would cause the last plot's line edit in the plotselector widget to steal focus temporarily. On losing the focus it would trigger the `QLineEdit::editingFinished slot which would call `plotselector.view.rename_plot`. This also happened on Workbench closing, which would then try to update the name from the plotselector widget that has been deleted, and would throw the exception.

Re #26305

Re #24818

re #25115

Refs #25048

Ensures that each new editor uses the same font as the initial
tabbed editor construction
Refs #25048

Martyn Gigg authored 6 years ago and Gigg, Martyn Anthony committed 6 years ago

Refs #24743

If the user is being prompted to save files (option in the settings)
then the prompt has the final decision whether to save or discard.

If the user is NOT being prompted, then pressing File>Save Script or
CTRL+S will force save, this has 2 outcomes:
- Code editor contents already exist in a file, in which case the
file is just saved
- Code editor is a `New Tab`, in which case the user is prompted to select
where to save.
- If a code editor is closed via `X` or middle mouse click, the file is
just discarded without notice.

- Rebased off the Settings PR #24790 as some testing functionality from there was necessary
- Removed dead code from editor.py and codeeditor_tab_view
- Added qt_assertions_helper package, which provides Qt-specific assertions,
such as a way to check the number of connections on a QObject
- Moved test_multifileinterpreter to be QT5 only
- Moved mock_codeeditor to be in utils.testing.mocks

A message box was appearing under the splash screen on startup if
'mantid_api_import_needed' returned true when restoring a script.
New behaviour is to not add the simpleapi import if the tab is
being restored.
Also rebase with master.

Add test case for "import mantid ... mantid.simpleapi.Algorithm()"

Move private methods from MultiPythonFileInterpreter that deal
with checking for python script compatibility into a new module.

When opening a python script in workbench, Mantid will check if
the mantid.simpleapi is imported and, if any SimpleAPI algorithms
are used, the user will be warned and asked if they would like to
add the import, which Mantid will add automatically.

Added "previous" button
Next/Previous now have icons
Made layout tighter
Added X to close
Added find/replace in Editor menu
Added Escape to close find, only works if Find/Replace has focus
Added Enter to search next, Shift+Enter to search previous,
only works if Find/Replace has focus

Replace magic numbers in PythonFileInterpreter's replace
tab/spaces functions with variable

Error raised when trying to restore saved script files that no
longer exist. Fix this with a try-except block and add test for
the case.

Workbench will now note file paths of scripts that are open when
mantid is closed (saved in QSettings). It will restore these on
startup.